Sentence Correction (SC) | Re: By 1492, when Christopher Columbus “discovered” the New World, North A

Official Answer from VeritasPrep:

The non-underlined modifier "By 1492" at the beginning of the sentence is an important phrase for controlling the timeline of the situation. Not only does this set the action in the past tense, it also puts emphasis on the fact that this threshold date is a dividing line along the timeline - the sentence needs to highlight that something occurred before that time.

For that reason, the verb "was visited" in the original sentence (choice A)
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